fuel problem?

[tynmgu]

hi all ive been working away and the van has only been started a few times well back now and started the van a few strange noises but started ok ran for 5 minuets or so but now when starting fires up for a few seconds then dies thinking this could be fuel pump ? any other thoughts will help cheers

[infidel]

we need more to go on.
engine?
mechanical pump?

[tynmgu]

its a 2 ltr air cooled 1982 with a mechanical pump when I started it up there was a noise but I thought it was the tappets as it had been stood a few weeks

[infidel]

the pump can be checked in a flash.
unbolt it , remove the outlet pipe, depress the actuating lever with your thumb.
fuel should spew out .
if all ok, check the carb float chamber and shutoff valve for water/ dirt/blockages.
sometimes the fuel evaporates and leaves a sticky residue which prevents the shutoff valve from opening.

the noise might just be water in the fuel, which will make an alarming noise before stopping the engine.
hopefully someone else will chip in with other suggestions.

good luck

[tynmgu]

cheers shall check it tomorrow just hope it dont rain theres no smell of petrol in engine bay so im thinking its the pump

[tynmgu]

well still not sorted van will fire up but after ten seconds or so dies fuel pump is ok as there is petrol there any suggestions please

[Ralf85]

Back to the beginning, before assuming the problem is a fuel pump. Have you checked the fuel filter(s)? If you have crud in there the engine can start ok but as soon as you rev it a bit the crud stops the fuel getting through. It then settles down until you start it again.

[tynmgu]

will check that one out tomorrow cheers